Inverter air-water heat pump Crystal Aqua Aura II 19S, three-phase
Crystal Aqua Aura II 19S inverter air-to-water heat pump is from the Aqua Aura II series by Crystal. This series of heat pumps comes to the market after a series of tests made in the northern countries under very severe weather conditions. Every detail in this air-to-water heat pump has been selected to ensure precise and reliable operation in all conditions.
Functional characteristics
EcoTouch control
Inverter technology
Touch screen
Silent mode
Menu in Bulgarian
The 4.3-inch LCD Touch Display allows for easy and intuitive control and setup of the heating system's many components. The advanced software algorithm ensures highly efficient operation of the heat pump system with minimal energy costs. The ability to integrate a WiFi module into the control allows remote access and control of the entire system.
Temperature curve control
Users are given the opportunity to adjust the system to suit the requirements in each specific case - variable heat loads, different insulation, joinery, etc. by building their own temperature curve. This is created as an inverse linear relationship between the outdoor temperature (five values) and the outlet water temperature (five values at each set outdoor temperature).
Information about the current state of the system
Not only installers but also users can monitor via a graphical display the instantaneous status and operating parameters such as compressor frequency and amperage, water flow, all temperatures, high and low pressures, etc.
Room temperature control
In addition to control by outlet temperature, users can also select control by room temperature. In this mode, the heat pump will calculate the supply water temperature to most quickly achieve and maintain a constant set room temperature.
Absence mode (holiday mode)
The absence mode logic built into the control allows users to set a start and end period for the holiday, during which the heat pump will maintain a lower temperature in the home and DHW cylinder, thus consuming less energy. The system will switch back to normal operation shortly before the end of the holiday and users will return home to a well-warmed home with a heated water heater.
Automatic mode switching Heating/Cooling
Allows automatic switching between heating and cooling based on outside temperature, room temperature or an external signal from a peripheral device, thus reducing user intervention to a minimum.
Advantages
Price advantages of the heat pump
- Built-in 3-way DHW valve
- Built-in electric heater with priority option (2 stages - 2kV or 6kV)
- WiFi module for remote access and control of the heating system
- 5 temperature sensors for control of hydraulic circuits
Other features of the Crystal Aqua Aura II 19S air-to-water heat pump:
- Room temperature compensation
- Sleep mode
- Double temperature curve
- Peak avoidance function
- Production of DHW
- Anti-legionella programme
- Functioning in the presence of a secondary error
- Software modification
Technical advantages of the heat pump
- 4,3'' ECO Touch touch display with menu in Bulgarian, advanced software algorithm for high efficiency heat pump operation
- Temperature curve, room temperature or fixed water temperature control
- Control of circulating pumps for heating and DHW
- Control of external heat source via relay with priority option
- Visualization of the refrigeration process by means of multiple temperature and pressure sensors
- Visualization of hydraulic loops (temperature sensors, flow switch)
- Microprocessor control
- 2 temperature zones - low temperature and high temperature
- Quiet mode of operation
- Easy installation and servicing
Technical parameters
| Parameter | Units | Aqua Aura II 19S |
|---|---|---|
| Energy efficiency class - low temperature application (W35) | - | А+++ |
| SCOP, temperate climate zone (Twater=+35°C) | - | 4.84 |
| Seasonal heating energy efficiency (ηs,h) | % | 190.5 |
| Power | V/Hz/Ph | 380-420/50/3 |
| Heating capacity (W35˚C @ A7˚C) | kW | 18.5 |
| C.O.P min./max. | W/W | 4.47 / 5.01 |
| Heating power min/max (W35˚C @ A7˚C) | kW | 9.2 / 18.5 |
| Power supply min/max (W35˚C @ A7˚C) | kW | 1.834 / 4.142 |
| Heating output (W45˚C @ A7˚C) | kW | 18.2 |
| C.O.P min/max (W45˚C @ A7˚C) | W/W | 3.60 / 3.82 |
| Heating power min/max (W45˚C @ A7˚C) | kW | 8.5 / 18.2 |
| Power supply min/max (W45˚C @ A7˚C) | kW | 2.248 / 4.998 |
| Cooling capacity (W18˚C @ A35˚C) | kW | 22.5 |
| E.E.R min/max (W18˚C @ A35˚C) | W/W | 3.58 / 5.12 |
| Cooling capacity min/max (W18˚C @ A35˚C) | kW | 8.5 / 22.5 |
| Power supply min/max (W18˚C @ A35˚C) | kW | 1.660 / 6.285 |
| Cooling capacity (W7˚C @ A35˚C) | kW | 16 |
| E.E.R min/max (W7˚C @ A35˚C) | W/W | 2.85 / 3.2 |
| Cooling capacity min/max (W7˚C @ A35˚C) | kW | 5.5 / 16 |
| Power supply min/max (W7˚C @ A35˚C) | kW | 2.97 / 5.51 |
| Temperature range (heating/cooling) | °C | -25 ~ 43 |
| Minimum system temperature (heating/cooling) | °C | 20 / 7 |
| Compressor - type | - | Twin DC Rotary |
| Fan - number | - | 2 |
| Fan - flow rate | m³/h | 7000 |
| Fan - power supply | W | 120 |
| Noise (indoor/outdoor) | dB(A) | 44 / 59 |
| Heat exchanger - type | - | Plate |
| Heat exchanger - pressure drop | kPa | 26 |
| Heat exchanger - pipe connections | Inch | G1-1/4″ |
| Expansion vessel | l | 5 |
| Circulation pump - type | - | DC, PWM |
| Circulation pump - pressure, max. | mH₂O | 12.5 |
| Circulation pump - flow rate (min./min./max.) | l/s | 0.55 / 0.92 / 1.1 |
| Dimensions (internal body) - W×D×H/package | mm | 500×300×750 / 580×350×820 |
| Dimensions (outer body) - W×D×H/package | mm | 1085×400×1450 / 1140×460×1590 |
| Refrigerant - type/quantity | kg | R32 / 3.0 |
| Additional Freon (> 5 m) | g/m | 30 |
| Additional compressor oil | g/m | according to manual |
| Pipe connections - liquid/gas | inch | 3/8″ - 3/4″ |
| Pipe connections - maximum length | m | 20 |
| Net weight (internal / external body) | kg | 42 / 120 |
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